Sand-molding machine



(ModeL) 2 Sheets-Sheet 1.

W. W. DRUMMOND.

SAND MOLDING MACHINE.

No. 354,108. Patented Dec. 14, 1886.

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(ModeL) 2 Sheets-Sheet 2. W. W. DRUMMOND.

SAND MOLDING MACHINE.

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\VILLIAM WHYTE DRUMMOND, OF LOUISVILLE, KENTUCKY.

SAND-MOLDING MACHINE.

27:?EZ'GfE'ICATIf/N forming part of Letters Patent 130.35%,108, dated December 14, 1886.

Application filed Jul JG, 1886. Serial No. 109,160. (Modch) To all whom it may concern:

Be it known that 1, WILLIAM WHYTE DRUM- MOND, a citizen of the United States, residing at Louisville, in the county of Jefferson and 5 State of Kentucky, have invented new and useful Improvements in Sandlvlolding Machinery, of which the following is a specification.

The improvements which are the subject of this patent are made upon the machines heretofore patented by lVilliam Aikin and myself in divers Letters Patent of the United States viz., Nos. 195,070, 105,071, 195,7S, 195,785, 195,786, 201,377, 202,322, 2%,570, and 291,124, but moreparticularly Nos.224, 570 and 291,124, to which said several patents reference is made for the more full description of the parts shown herein, but which it is not necessary to describe further than to explain the proposed modifications applied thereto.

In the annexed drawings, which make part of this specification, Figure 1 is a back View of that portion of molding-machine to which my improvement relates, showing the back end of the sand-drawer and the mechanical appliances for operating the same. a side view of the same.

Similar letters of reference indicate corresponding parts in all the figures.

In the accompanying drawings, the letter A indicates the sidesof the main frame of the machine. 011 the top part of the back of the frame is fastened the sand-hopper frame B. In this frame the adjustable sand-drawer frame 0 (having a fixed bottom plate, G,) is placed in proper position and fastened at such height as is required for the depth of such flask as may be used in molding. In this frame four or more wheels, D, are placed, with journaled pins D to revolve on. These wheels carry the sanddrawer in its movement forward and back.

F is the sand-drawer, which is made with projecting flanges on the upper sides, which bear on the wheels D while being used. The drawer has a proper projection on the back end, to which is fastened awrist-pin, I, and to which a connectingrod, I, is fitted to connect to a similar wrist pin, 1 on the flange or arm of a bevel'wheel.

H is a berel wheel made with a flange or Fig. 2 is.

extended arm to receive the wrist-pin 1 which is connected to wrist-pin I on the back end of the drawer by the connecting-rod I. This bevel-wheel has a central bearing on the cross bearing-bar L.

H is a bevel pinion (or wheel) which meshes into the bevel-wheel H, being fastened on the shaft J, which has its bearings in jourrial-boxes M M. On the other end of the shaft J there are fastened a hand-wheel, K, and a cog or friction wheel, K.

The cross bearing-bar L is fastened to the sides of the main framesA A, and made with journal-bearings to receive the bevelwheel H and the shaft-bearing M.

N is the main driving-shaft, to which is attached a wheel, K.

K is an intermediate wheel hung in a link, K, which is pivoted to the main frame and is operated by thelever K all of which are used to connect and convey power from the shaft N to shaft J when it is required to operate the drawer by power.

l is the sand-gage box, in which the patterns are used in molding, and which is fastened to top front part of the frame A. On top of this box the flask O is placed to receive the sand from the drawer,which it brings from the hopper E.

\Vhen the machine is to be started, the operation of my improvements is as follows (when using the drawer by hand:) The drawer being in position, as shown by dotted lines in Fig. 2, the sand having been put in the hopper and the flask placed on top of gage-box, the hinged extension-piece Q see Patent 224,570) is let down into position to form a connection between the bottom plate and the flask. The handwheel is then rotated, which brings the bevelwheels into motion, thus bringing out the drawer with its load of sand from the hopper until it is in position, as shown by solid lines in Fig. 2. Then the wheelis stopped until the sand from the drawer is dropped into the flask. The wheel is again rotated, which carries the drawer back into the hopper, and the extensiolrpiece is then raised and the molds made as described in patents re ferred to. \Vhen the drawer is to be operated by power, the lever K is pulled out, which brings the intermediate whee], K in I do not confine my improvements to any particular machine, as they can be adapted to any molding-machine using a sand-drawer.

What'I claim is-- In a sand-molding machine, in combination with a reciprocating sand-drawer, the wheels H H, the connecting-rod I, and pins I I, as and for the purpose shown and set forth.

WILLIAM 'WHYTE DRUMMOND.

XVitnesses:

CHAS. A. CLOUD, A. L. WHITE. 

